Submarine boat.



PATENTED SEPT. 22, 1908.

L. Y. SPEAK. SUBMARINE BOAT.

APPLIGATIOH FILED DBO. 17, 1902.

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H0 MODEL.

81100 M oz 313 601 mu 6g 2 g 2mm; 00% WW PATENTED SEPT. 22, 1903.

L. Y. SPEAK. SUBMARINEBOAT.

APPLIGATION FILED DBO. 11, 1902.

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UNITED STATES Patented September 22, 1903;

PATENT OFFICE.

' LAIVRENCE Y. SPEAR, OF GREENPORT, NEW YORK, ASSIGNOR TO ELEC- TRIC BOAT COMPANY, A CORPORATION OF NEW JERSEY.

SUBMARINE BOAT.

GFEGIFICATION forming part of Letters Patent No. 739,734, dated September 22, 1903.

Application filed December 17,1902. Serial No. 135,499. (No model.)

usually in the same plane as the axis of the boat. r

The purpose and object of the present invention is to provide means for increasing or diminishing the horizontal skeg'area of the boat at will.

In the accompanying drawings, which serve to illustrate an embodiment of the invention, Figure 1 is a general plan view of a submarine boat, showing the present invention applied to the stern or after extremity thereof; and Fig. 2 is a transverse section, on an enlarged scale, through the skegs at line m in Fig. 1. Fig. 3 is an enlarged plan View of one of the devices, partly broken away to'show a wormand-screw gear for operating the movable skeg; and Fig. 4 is a similar view illustrating another means for operating the skeg, diifering slightly from that seen in Fig. 3. Fig. 4 is a View as seen from the left in Fig. 4 and showing more clearly the construction and mounting ofthe parts.

A designates the body or hull of a submarine boat. B B are the horizontal skegs at the bow, and O C the horizontal skegs at the stern. These skegs B and O are fixed and have of course a constant area.

As shown herein, the after skegs C are each formed of two plates, (seen clearly in Fig. 2,) with a pocket or space 0 between them for housing a movable skeg D. In order to get a wider skegD, it is preferred to extend the pocket 0 into the interior of the boat through the shell of the latter by means ofa box (1, as clearly shown in Fig. 2.'

The movable skegD is hinged between the plates of the skeg G at d, preferably at its narrower forward end, and it may be operated from inside of the boat by any suitable mechanism. That shown in Fig. 3 consists of it These devices are fixed on the sides it ismonnted slidably on the skeg.

. shaft e, extending from inside the boat out to the outer part of :the permanent skeg C and having fixed on it near its outer end a screw or worm g, which gears with a rack h on the end of the skeg D. The shaft e may be rotated by hand or power from inside the boat. It is shown in Fig. 3 as provided with a crank i for the purpose; but it may be rotated through any kind of intermediate mechanism.

Figs. 4 and 4. show a slightly-difierent construction of the mechanism for operating the skeg. In this construction the shaft e is itself a screw and on it runs a nut j, mounted on the skeg D. The skeg moves in a curved path about its pivot, and in order that the nut may accommodate itself to the straight screw The outer end of the shaft e is rotatively journaled in a bearing e, secured to the upper plate of the fixed skeg, Fig. 4*, and the nut j has a circular base j, rotative and slidahle between keepers j on the skeg D. The skeg D in Fig. 4 is rela-tivel y narrow and does not enter the boat.

Obviously the construction shown may be applied to either or both extremities of the boat, and it is not absolutely essential that the fixed skeg (3 shall be of two plates with a pocket between them for the movable skeg. This pocket construction is for the better protection of the movable skeg and to guide and strengthen it when it is made to project from the outer margin of the fixed skeg.

In Figs. 3 and 4 the upper plate of the fixed skeg is broken away in part the better to show the movable skeg. In Fig. 3 the full lines show the skeg D drawn in or incased, and the dotted lines show it projected for increasing the skeg area. In Fig. 4 the full lines show the skeg D partly projected. In

this figure bevel-gears 1c are shown for operating the screw-shaft e While especially applicable to submarine or submergible boats, the invention is not strictly limited. to any particular class of boats or vessels.

Obviously the skegs will be always submerged when the boat is in the water and on an even keel, and the movable skeg will always overlap the fixed skeg either wholly or partly, as herein shown. The skegs O are commonly designated horizontal skegs, and this term is used herein in a descriptive sense. This invention is not thereby restricted to the skegs being absolutely horizontal when the boat is on an even keel. They are lateral skegs and are usually in a horizontal plane coincident with the longitudinal axis of the boat.

Having thus described my invention, I claim- 1. A boat having submerged horizontal skegs and means for increasing its horizontal skeg area at will from the interior of the boat.

2. A boat having fixed and submerged horizontal skegs, and movable skegs overlapping the respective fixed skegs and adapted to move out or in horizontally for varying the "horizontal skeg area of the boat.

3. A boat having fixed and submerged horizontal skegs, horizontally-movable skegs in pockets onthe respective fixed skegs, and means for operating said movable skegs from the interior of the boat.

4. A boat having fixed and submerged horizontal'skegs, m'ovable skegs overlapping the respective fixed skegs, and screw mechanism for operating said movable skegs from the interior of the boat to vary the horizontal skeg area of. the boat. V

5. A boat having a fixed horizontal skeg composed of plates with a pocket between them to contain a movable skeg, the said movable skeg pivotally connected to the fixed skeg near one of its ends, and means for moving said skeg toward and from the boat in its pocket in order to vary the horizontal skeg area of the boat.

6. A boat having a-fixed horizontal skeg provided with a pocket to receive a movable skeg, a movable skeg in said pocket, a box (1 within the boat and open to the said pocket to receive a part of the movable skeg, and means, actuatable from within the boat, for operatingsaid movable skeg.

In witness whereof I have hereunto signed my name, this 12th day of December, 1902, in the presence of two subscribing witnesses.

LAXVRENCE Y. SPEAR.

Witnesses:

THEODORUS S. BAILEY, LOUIS ECKERT. 

